[quote=@Sep]
So some of us have done this dance a few times.

What's a character you've never seen portrayed or an idea you've never seen that you'd like too? 
[/quote]

I've been trying for ages to do a take on Ghost Rider that doesn't speak, but communicates by generating an ambient soundtrack of classic heavy metal songs. Sadly, once I get past the initial concept, I have no idea what to do with it.

As for characters I've never seen portrayed, I imagine one could do an awful lot playing Lois Lane or Jimmy Olsen as a dedicated protagonist rather than an NPC.